Made in the USA, the Vortex Pro Series 1 inch rings come in either low (PR1-L) or medium ( PR1-M) heights. The torque specs are laser engraved on the ring making mounting to your riflescope much easier. The Vortex Pro Series one inch rings combine rock-solid reliability and strength with high quality machining to ensure ultimate accuracy and consistency. Streamlined, lightweight and durable, these rings use four T-25 Torx socket cap screws for secure mounting. Features include Type 2 matte black anodized, integrated recoil lug, and did we mention they are made in the USA!